Home / 636,117,965.70-954,176,948.55-442,407,721.20

Finding the Fourth Proportional to 636,117,965.70, 954,176,948.55 and 442,407,721.20

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Solution

The fourth proportional to 636,117,965.70, 954,176,948.55 and 442,407,721.20 is: 663,611,581.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,117,965.70 : 954,176,948.55 = 442,407,721.20 : x
  2. Step 2: Convert to fraction form
    636,117,965.70/954,176,948.55 = 442,407,721.20/x
  3. Step 3: Cross multiply
    636,117,965.70x = 954,176,948.55 × 442,407,721.20
  4. Step 4: Simplify right side
    636,117,965.70x = 422,135,249,429,575,104
  5. Step 5: Solve for x
    x = 422,135,249,429,575,104/636,117,965.70
  6. Step 6: Final answer
    x = 663,611,581.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.